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Increased intake of vitamin D has been shown to reduce fractures up to 25% in older people.
Pubic lice (crabs) are usually spread through sexual contact. You cannot catch them by using a public toilet.
Thyroid conditions cause a higher risk of fibromyalgia and chronic fatigue syndrome.
People about to have surgery must tell their health care providers about all supplements they take.
There can actually be a 25-hour time difference between certain locations in the world. The International Date Line passes between the islands of Samoa and American Samoa. It is not a straight line, but "zig-zags" around various island chains. Therefore, Samoa and nearby islands have one date, while American Samoa and nearby islands are one day behind. Daylight saving time is used in some islands, but not in others—further shifting the hours out of sync with natural time.